So, L1064 and Cluster D are downstream of Z2221/PF5160, and probably L198 is too.

I will be extremely surprised if L198 is downstream of Z2221. It has clustered very closely with M67 for ages. Marko Heinila's trees, for example, show it just outside M67. Why do you think it would go with L1064?

I don't know how results of the last 3 months will alter my analysis, but up to last October I consistently got L1064, L198, Cluster D and Cluster B (and some other kits) on the same stem of L26, albeit in different configurations.

Regarding kit 90309, I'm sure it's M67+, so that ordering M67 test seems redundant to me. Also I suspect that in the past the kit's owner anonymously asked me about his classification at Semargl.me, and I answered the same. Of course, his Geno 2.0 test would be of great value.

I already did one redundant SNP test for myself (L236), just to get an instant obvious result, but even it didn't help to remove L236 from the draft tree. I prefer to recommend STR upgrades over blind tests of single SNPs.